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<?php /** * PHPExcel_CalcEngine_Logger * * Copyright (c) 2006 - 2015 PHPExcel * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * @category PHPExcel * @package PHPExcel_Calculation * @copyright Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel) * @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL * @version ##VERSION##, ##DATE## */ class PHPExcel_CalcEngine_Logger { /** * Flag to determine whether a debug log should be generated by the calculation engine * If true, then a debug log will be generated * If false, then a debug log will not be generated * * @var boolean */ private $writeDebugLog = false; /** * Flag to determine whether a debug log should be echoed by the calculation engine * If true, then a debug log will be echoed * If false, then a debug log will not be echoed * A debug log can only be echoed if it is generated * * @var boolean */ private $echoDebugLog = false; /** * The debug log generated by the calculation engine * * @var string[] */ private $debugLog = array(); /** * The calculation engine cell reference stack * * @var PHPExcel_CalcEngine_CyclicReferenceStack */ private $cellStack; /** * Instantiate a Calculation engine logger * * @param PHPExcel_CalcEngine_CyclicReferenceStack $stack */ public function __construct(PHPExcel_CalcEngine_CyclicReferenceStack $stack) { $this->cellStack = $stack; } /** * Enable/Disable Calculation engine logging * * @param boolean $pValue */ public function setWriteDebugLog($pValue = false) { $this->writeDebugLog = $pValue; } /** * Return whether calculation engine logging is enabled or disabled * * @return boolean */ public function getWriteDebugLog() { return $this->writeDebugLog; } /** * Enable/Disable echoing of debug log information * * @param boolean $pValue */ public function setEchoDebugLog($pValue = false) { $this->echoDebugLog = $pValue; } /** * Return whether echoing of debug log information is enabled or disabled * * @return boolean */ public function getEchoDebugLog() { return $this->echoDebugLog; } /** * Write an entry to the calculation engine debug log */ public function writeDebugLog() { // Only write the debug log if logging is enabled if ($this->writeDebugLog) { $message = implode(func_get_args()); $cellReference = implode(' -> ', $this->cellStack->showStack()); if ($this->echoDebugLog) { echo $cellReference, ($this->cellStack->count() > 0 ? ' => ' : ''), $message, PHP_EOL; } $this->debugLog[] = $cellReference . ($this->cellStack->count() > 0 ? ' => ' : '') . $message; } } /** * Clear the calculation engine debug log */ public function clearLog() { $this->debugLog = array(); } /** * Return the calculation engine debug log * * @return string[] */ public function getLog() { return $this->debugLog; } }
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